CN103646685B - A kind of composition of the positive conductive silver slurry of solar cell and preparation method thereof - Google Patents
A kind of composition of the positive conductive silver slurry of solar cell and preparation method thereof Download PDFInfo
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- CN103646685B CN103646685B CN201310581459.0A CN201310581459A CN103646685B CN 103646685 B CN103646685 B CN 103646685B CN 201310581459 A CN201310581459 A CN 201310581459A CN 103646685 B CN103646685 B CN 103646685B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
The invention discloses composition of the positive conductive silver slurry of a kind of solar cell and preparation method thereof, its constituent and mass percent is: silver powder 70 90%, glass dust 0.5 5%, sintering aid 0.1 2%, niobium alloy particle 1 10%, organic carrier 5 15%.Present invention improves the depth-width ratio of printing, its shear rate is 1000/s, and viscosity is 1500Pa.s, improves the shrinkage cavity phenomenon in sintering process, reduces series resistance, reduces contact silver silicon contact resistance.The evaluation of this battery efficiency uses, and measures its transformation efficiency and series resistance.
Description
Technical field
The invention belongs to technical field of solar, relate to composition and the preparation side thereof of the positive conductive silver slurry of a kind of solar cell
Method.
Background technology
Solar energy conduction positive silver paste is by being screen printed onto on solar battery sheet as the important materials manufacturing circuit, slurry
Constituent and performance directly influence solar conversion efficiency, currently, various patents, relevant silver slurry was had by document
Substantial amounts of report, by changing the various pieces such as organic carrier, glass dust, and silver powder in research, improves the conduction of silver slurry
Rate, thus, improve the transformation efficiency of solar energy, each relevant company and relevant research institution, carry out various effort,
And give announcement by obtained result, but.One of them more challenging difficult problem is: reduce silver-silicon contact circle
The contact resistance problem in face.For constantly reducing contact resistance, people are by methods such as change design, change material, sintering process
Solve this problem, and achieve corresponding achievement.It is found that: in the sintering process of solar battery sheet, sinter model
Enclose narrow silicon chip will be caused to connect to result in contact resistance excessive, cause and still have between transformation efficiency and theoretic preferable efficiency
The biggest gap, therefore, it is necessary to for this problem, use suitable technological means, improves and improves silver-silicon contact interface
Conductance.
Summary of the invention
In order to overcome resistance in prior art excessive, the defect that after printing, the deflection of circuit is the strongest, the present invention provides a kind of
Composition of the positive conductive silver slurry of solar cell and preparation method thereof, improves the depth-width ratio of printing, improves sintered
Shrinkage cavity phenomenon in journey, reduces series resistance, reduces contact silver-silicon contact resistance.Its technical scheme is as follows:
The composition of the positive conductive silver slurry of a kind of solar cell, its constituent and mass percent be: silver powder 70-90%,
Glass dust 0.5-5%, sintering aid 0.1-2%, niobium alloy particle 1-10%, organic carrier 5-15%.
Further preferably, described silver powder refers to that silver powder particle diameter is in 0.1 μm-1 μm, in spherical silver powder particles,
Wherein preferably particle diameter is 0.5 μm.
Further preferably, described glass dust be include refer to particle diameter in 0.1 μm-1 μm, in spherical zinc oxide, lead phosphate
Mixture, the mass ratio of its mixture is zinc oxide: lead phosphate=1: 15.
Further preferably, described sintering aid molecular structure is (RCOO)2M, wherein R be carbon number be the alkyl of 8-18,
M is metal, including: Zn, Pd, Rh, Ru, Mg, wherein preferably alkyl is the alkyl of twelve carbon atom, preferably gold
Genus ion is Pd.
Further preferably, described niobium alloy includes Nb-Ti, Nb3The powder of Sn bianry alloy and Nb-Ti-Zr multicomponent alloy
Powder, at least one.Wherein it is preferred that Nb-Ti-Zr powder.
Described organic carrier is ethyl cellulose and butyl glycol ether, succinic acid ether ternary mixture, the quality of its mixture
Ratio is: ethyl cellulose: butyl glycol ether: succinic acid ether=1: 5: 6.
The preparation method that a kind of its constituent of the present invention and mass percent are, comprises the following steps: by glass dust,
Sintering aid, organic carrier, silver powder, niobium alloy powder, weigh mixing according to ratio of the present invention, then on three-roll grinder
Grinding, then detect with laser particle analyzer, the granularity reaching required can be packed, and prints for screen process press and make on silicon chip
With.
Compared with prior art, beneficial effects of the present invention:
Present invention improves the depth-width ratio of printing, in the case of its shear rate is 1000/s, viscosity is 1500Pa.s, improves
Shrinkage cavity phenomenon in sintering process, reduces series resistance, reduces contact silver-silicon contact resistance.The evaluation of this battery efficiency
Use, measure its transformation efficiency and series resistance.
Detailed description of the invention
Technical scheme is further illustrated below in conjunction with specific embodiment.
Embodiment 1 weighs material according to following proportioning, and silk screen secondary printing, in 770-9000 DEG C of sintering, its specific embodiment
For
Embodiment 2 weighs material according to following proportioning, and silk screen secondary printing, in 770-9000 DEG C of sintering, its specific embodiment
For
Embodiment 3 weighs material according to following proportioning, and silk screen secondary printing, in 770-9000 DEG C of sintering, its specific embodiment
For
Embodiment 4 weighs material according to following proportioning, and silk screen secondary printing, in 770-9000 DEG C of sintering, its specific embodiment
For
Embodiment 5 weighs material according to following proportioning, and silk screen secondary printing, in 770-9000 DEG C of sintering, its specific embodiment
For
Embodiment 6 weighs material according to following proportioning, and silk screen secondary printing, in 770-9000 DEG C of sintering, its specific embodiment
For
Embodiment 7 weighs material according to following proportioning, and silk screen secondary printing, in 770-9000 DEG C of sintering, its specific embodiment
For
Embodiment 8 weighs material according to following proportioning, and silk screen secondary printing, in 770-9000 DEG C of sintering, its specific embodiment
For
Embodiment 9 weighs material according to following proportioning, and silk screen secondary printing, in 770-9000 DEG C of sintering, its specific embodiment
For
Embodiment 10 weighs material according to following proportioning, and silk screen secondary printing, in 770-9000 DEG C of sintering, its concrete enforcement
Example is
Embodiment 11 weighs material according to following proportioning, and silk screen secondary printing, in 770-9000 DEG C of sintering, its concrete enforcement
Example is
Embodiment 12 weighs material according to following proportioning, and silk screen secondary printing, in 770-9000 DEG C of sintering, its concrete enforcement
Example is
In above-described embodiment, the effect of embodiment 5 is relatively preferable, and after monocrystalline sinters, solar energy conversion ratio can reach 18%.
The above, only best mode for carrying out the invention, any those familiar with the art is at present disclosure
In technical scope, the simple change of the technical scheme that can become apparent to or equivalence are replaced and are each fallen within protection scope of the present invention
In.
Claims (6)
1. the composition of the positive conductive silver slurry of solar cell, it is characterised in that its constituent and matter
Amount percentage be: silver powder 70-90%, glass dust 0.5-5%, sintering aid 0.1-2%, niobium alloy particle 1-10%,
Organic carrier 5-15%, described sintering aid molecular structure is (RCOO)2M, wherein R is that carbon number is
The alkyl of 8-18, M is metal, including Zn, Pd, Rh, Ru, Mg, described niobium alloy include Nb-Ti,
Nb3The powder of Sn bianry alloy and Nb-Ti-Zr multicomponent alloy powder.
The composition of the positive conductive silver slurry of solar cell the most according to claim 1, it is characterised in that
Described silver powder refer to silver powder particle diameter in 0.1 μm-1 μm, in spherical silver powder particles.
The composition of the positive conductive silver slurry of solar cell the most according to claim 2, it is characterised in that
Described particle diameter is 0.5 μm.
The composition of the positive conductive silver slurry of solar cell the most according to claim 1, it is characterised in that
Described glass dust be include particle diameter 0.1 μm-1 μm, in spherical zinc oxide, the mixture of lead phosphate,
Its mixing quality is than for zinc oxide: lead phosphate=1: 15.
The composition of the positive conductive silver slurry of solar cell the most according to claim 1, it is characterised in that
Described organic carrier is ethyl cellulose and butyl glycol ether, succinic acid ether ternary mixture, its mixture
Mass ratio be: ethyl cellulose: ethylene glycol ethyl ether: succinic acid ether=1: 5: 6.
6. according to the preparation side of the composition of the positive conductive silver slurry of solar cell described in a kind of claim 1
Method, it is characterised in that comprise the following steps: by glass dust, sintering aid, organic carrier, silver powder, niobium alloy
Powder weighs mixing, then grinds on three-roll grinder, then detects with laser particle analyzer, reaches required
Granularity, packs, and prints on silicon chip for screen process press.
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| CN201310581459.0A CN103646685B (en) | 2013-11-19 | 2013-11-19 | A kind of composition of the positive conductive silver slurry of solar cell and preparation method thereof |
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| CN103646685A CN103646685A (en) | 2014-03-19 |
| CN103646685B true CN103646685B (en) | 2016-08-17 |
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| TWI632114B (en) * | 2017-08-14 | 2018-08-11 | 中國鋼鐵股份有限公司 | Conductive silver paste composite composition |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102376378A (en) * | 2010-08-19 | 2012-03-14 | 比亚迪股份有限公司 | Heating electrode paste, heating electrode and planar oxygen sensor comprising heating electrode |
| CN103000255A (en) * | 2012-11-10 | 2013-03-27 | 江苏瑞德新能源科技有限公司 | Solar cell front sliver paste adaptable to low-temperature sintering |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2752470A1 (en) * | 2006-08-07 | 2014-07-09 | Inktec Co., Ltd. | Process for preparation of silver nanoparticles, and the compositions of silver ink containing the same |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102376378A (en) * | 2010-08-19 | 2012-03-14 | 比亚迪股份有限公司 | Heating electrode paste, heating electrode and planar oxygen sensor comprising heating electrode |
| CN103000255A (en) * | 2012-11-10 | 2013-03-27 | 江苏瑞德新能源科技有限公司 | Solar cell front sliver paste adaptable to low-temperature sintering |
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Address after: 403, room 15, 212003 village, boat yard, Jiangsu University of Science and Technology, Zhenjiang, 2 dream Creek Road, Jiangsu Applicant after: Gao Yanmin Address before: Meng Xi Road 212000 Zhenjiang city of Jiangsu province Jingkou District No. 6 building 15 Room 403 Applicant before: Gao Yanmin |
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Effective date of registration: 20181119 Address after: 528400 First Building, No. 11 Qingfu Road, Maohui Industrial Zone, Henglan Town, Zhongshan City, Guangdong Province Patentee after: Zhongshan Bolid Macromolecule Material Co., Ltd. Address before: Room 403, 15 Building, No. 1 Village, Shipping College, Jiangsu University of Science and Technology, No. 2 Mengxi Road, Zhenjiang City, Jiangsu Province, 2003 Patentee before: Gao Yanmin |
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